Chionas-bis. 1 1 3 



CHIONASPIS THE^, Mask. 



(Plate XXXIII.) 



Chionaspis thece, Maskell, ' Catalogue of Coccida?,' Indian Museum Notes^ 

 Vol. II., No. I, p. 59(1891). 



Chionaspis exercitata, Green, Tnd. Mus. Notes, Vol. IV., No. i, p. 3 (1896). 



Female puparium {Jig. 9) long and narrow ; sides sub-parallel ; often slightly 

 concave above owing to its situation along the hollow of one of the veins or by 

 the midrib. Colour, pale reddish or brownish fulvous ; sometimes bleached to 

 a whitish tint ; always very inconspicuous. Pellicles yellow, the first less than 

 half length of second. Total length of fully developed scale 275 to 3*25 mm. 

 Breadth averaging 0*50 mm. 



Male puparium {Jigs, i to 7) snowy white ; strongly tricarinate ; the carinEe 

 very prominent and irregularly waved ; pellicle yellow. Length no mm. The 

 male scales are not disposed irregularly, but congregated in definite patches, 

 the individuals lying parallel with each other, and all pointing in the same 

 direction {Jig. 8). 



Adult female {fig. 10) oblong, narrowest in front ; abdominal segments 

 distinct, with well-marked protuberances on each side. Colour purplish red, 

 pygidium yellowish. Anterior spiracles with distinct parastigmatic glands, a 

 single glandular pore above each of the second pair. The third and fourth 

 (rarely the second) abdominal segments each with two stout spiniform squames 

 Pygidium {fig. 11) with the lobes and other marginal characters as in Ch. 

 aspidistra:. In the preliminary description of the species {Ind. Mus. Notes., loc. 

 cit.) it is stated that there is a single undivided median lobe ; but better 

 preparation, with the aid of stains, shows that a division exists, though incon- 

 spicuous and difficult to detect, and that the apparently single median lobe 

 consists of the usual pair with their inner faces contiguous. Dorsal pores few : 

 a short series of 2 to 3 on base, and usually only a single pore on the fourth 

 space. Circumgenital glands in five groups ; median with a nearly constant 

 number of 8 orifices; upper laterals with from 18 to 25; lower laterals, 16 to 18, 

 the upper laterals having nearly always the larger number of orifices. Length 

 I to I '25 mm. Greatest breadth 0*40 mm. 



Adult male {fig. 12) bright red; apodema paler; legs yellowish. Ocelli 

 large, black ; lower pair separate by nearly their own diameter. Rudimentary 

 eyes not apparent. Antennte as long as the body of the insect ; tenth joint 

 much shorter than ninth, a curved knobbed hair at its apex {fig. 13). Foot 

 {fig. 14) with two digitules (i ungual and i tarsal). Tarsus as long as tibia. 

 Length about i mm. 



Eggs and young larvae dull red. 



Habitat on upper surface of leaves of Tea plant, Psychotria, and other 

 shrubs — Pundaluoya, Kandy, Balangoda. The species occurs also in the 



Q 



